Chaos I is a kinetic artwork by Swiss artist Jean Tinguely located inside The Commons, which is downtown Columbus, Indiana, United States.

Chaos I stands 30 feet tall, weighs 3 tons, and originally had 12 motors that operated 13 individual functions.

[2] Chaos I was fabricated from new and scrap material purchased in or from Columbus: scrap metal was acquired from Kroot Corporation, the large bearing used on the base was purchased from Southern Machine, Inc, many of the spinning metal shapes were created by Noblitt Fabricating, and the original 12 motors were provided by Daniel-Hayden Electric Co.[3] The architect for the original building, Cesar Pelli, wanted to have a sculpture in the center of The Commons by Tinguely and with the generosity of two Columbus families, the Millers and Tangemans, this idea became a reality.

Many from Columbus helped provide materials and expertise needed to fabricate, transport, and then install the artwork in its present location, where it has always remained.

[5] The Commons was rebuilt in 2011 by Koetter Kim & Associates, but the sculpture remained in place during the building process; it was switched back on June 4, 2011.